Button



(No Model.)

F. B. BRISTOL. BUTTON.

No. 423,370. Y Patented Mar. 11, 1890.

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UNITED STATES PATENT OETICE.4A

FRANKLIN B. BRISTOL, OF NAUGATUCK, CONNECTICUT, ASSIGNOR OF TWO- TI-IIRDS TO BENJAMIN H. BRISTOL, OF SAME PLACE, AND WILLIAM H. BRISTOL, OF HOBOKEN, NEW JERSEY.

BUTTON.A

SPECIFICATION forming part of Letters Patent No. 423,370, dated March 11, 1890.

y Application filed August 30, 1889. Serial No. 322,464. (No model.)

To all whom, t may concern,.-

Be it known that I, FRANKLIN B. BRISTOL, a citizen of the United States, and a resident of Naugatuck, in the county of New Haven and State of Connecticut, have invented a certain new and useful Improvement in Buttons, of which the following is a specification.

My invention has reference to improvements in buttons, and especially to that class of buttons which are attached to the material by the use of a solid metallic tack; and it has for its object to provide at a reduced cost a button equal in appearance to the fnergrade of buttons, and one which can be quickly and firmly secured to the material without necessarily involving the use of a special tool.

To this end myinvention consists, essentially, in a button provided with a clinchingplate located between the shell and the back, said clinching-plate being provided with an eccentric clinching-surface adapted to turn over Or clinch the end of the tack when the latter is forced into the button.

In the accompanying' drawings, Figure 1 is A a cent-ral section, on an enlarged scale, of a button constructed according to my invention. Fig. 2 is asimilar section showing the buttonapplied to the material. Fig. 3 is a sectional elevation of the clinching-plate. Fig. 4 is a face view of the same. Similar letters indicate corresponding parts. In the drawings, referring atpresent to Figs. l and 2, the letter A designates the shell of a button, and B is the back thereof. C is a tack of the .usual type, and D is the clinchE ing-plate. The back B has a central depression or hub a and a central Orifice or opening b in the bottom thereof for the passage of the tack C. The clinching-plate D is provided with a central hub c, fitting into'the hub dof the back B, the ange d of said clinchingplate bearing or resting upon the flange of the back. In the bottom of the clinchingplate B is formed a concave surface e, located eccentrically with respect to the center line 0f the button Or with the hub, so that when the tack C is forced against the said surface e the inner portion of the shank of the same is turned over upon itself Or clinched, to

firmly secure the tack to the back, as shown 5o in Fig. 2. The concave clinching-surface eX- tends slightly beyond the centerof the hubw that is, over the center line Of the buttonso that said surface will engage with and positively clinch or turn over the point of the 5 5 tack without the use of excessive force, whereby a great advantage is obtained over buttons wherein the tack is riveted against a surface which does not positively deiiect the point of the same.

In practice I make the clnching-plate of sheet-steel, and introduce the same into the i button between the shell and the back, and then close the button in the usual manner,

the clinching-plate being held between the shell and the back. The tack C is provided with a suitable .head f, as usual. It is evident that the eccentric clinching-surface could be formed directly into the shell of the button; but in this case it detracts from the ap- 7o pearance of the button.

What I claim as new, and desire to secure by Letters Patent, is

A button consisting of a .shell and a back provided with a central hub, an interposed clinching-plate having a hub entering the hub of theback and provided with a concave clinching-surface located entirely Wit-hin the lower face of the hub, and a central opening in the back for the passage of the tack, sub- 8o FRANKLIN B. BRISTOL.

Witnesses:

JOHN M. SWEENEY, EDWARD B. GOODYEAR. 

